[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [IO](./puppeteer.protocol.io.md) > [ReadRequest](./puppeteer.protocol.io.readrequest.md) > [size](./puppeteer.protocol.io.readrequest.size.md) ## Protocol.IO.ReadRequest.size property Maximum number of bytes to read (left upon the agent discretion if not specified). Signature: ```typescript size?: integer; ```